The M936A2 Truck, Medium Wrecker: 5-ton, 6x6 w/winch is part of the M939 Series of 5 ton 6x6 trucks. The M936A2 series wreckers are designed for recovery of disabled or mired vehicles, and perform crane operations. The Garwood crane extends a maximum 18 feet (5 meters), elevates 45 degrees, and swings 360 degrees.